Re: [ZODB-Dev] large database files

2008-07-23 Thread Benji York
On Wed, Jul 23, 2008 at 2:01 AM, Sean Allen [EMAIL PROTECTED] wrote:
 step 1, move about 10% of our data over to get an idea about speed of
 searching 1.5 million entries etc.
 standard file storage... the csv file i dumped all the info to is about 190
 megs, the resulting file
 storage file is 750 megs ( 1.8 gigs before packing ). Does this mean, that I
 should expect the entire database
 to close in at something like 7.5 gigs?

Not a bad guess.

 If yes, are there problems that can arise for a database of that size?

You should be fine.  That's a small database by some standards.
-- 
Benji York
Senior Software Engineer
Zope Corporation
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Re: [ZODB-Dev] large database files

2008-07-23 Thread Benji York
On Wed, Jul 23, 2008 at 2:01 AM, Sean Allen [EMAIL PROTECTED] wrote:
 i'm starting to do some serious playing around with zodb.

 step 1, move about 10% of our data over to get an idea about speed of
 searching 1.5 million entries etc.
 standard file storage... the csv file i dumped all the info to is about 190
 megs, the resulting file
 storage file is 750 megs ( 1.8 gigs before packing ). Does this mean, that I
 should expect the entire database

(After reading your other message about indexing); if you aren't doing
any indexing yet, then you should expect a larger database once the
indexes are added.

Some advocate keeping indexes in a separate database, especially if they
are a significant fraction of the total database size.  That way you can
have different packing schedules, backup plans, storage devices, etc.
-- 
Benji York
Senior Software Engineer
Zope Corporation
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Re: [ZODB-Dev] indexing

2008-07-23 Thread AFoglia
Sean Allen [EMAIL PROTECTED] wrote on 07/22/2008 11:44:11 PM:

 googling and the main zodb website seem to take me to a bunch of what 
 appears to be severely dated websites,
 most not updated in at least 2 years ( some upwards of 6 ). this is 
 probably because i simply don't know what to google
 for, so, could someone be so kind as to shoot some links to different 
 indexing options for use with zodb/zeo?

I've just started playing around with ZODB myself.  We have a database of 
~650,000 items, with dates and multiple tags.  For indexing, I'm using the 
zc.catalog package from PyPi, with a value index for the dates and a set 
index for the tags.  It seems good enough.  There were other indexing 
classes, but I don't remember any of them.

I've found the ZODB website to be very disorganized an not nearly as 
helpful as repeated googlings.

-- 
Anthony Foglia
Princeton Consultants
(609) 987-8787 x233___
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